William stephensojst



(No Model.)

W. STEPHENSON.

BOILER AND STRAW BURNING'PURNACE. No. 310,740. Patented Jan. 13,1885.

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WILLIAM STEPHENSON, OF JORDAN, ONTARIO, CANADA.

BOlLER AND STRAW= BURNIING FURNACE.

. SPECIFICATION forming part of Letters Patent No. 310,740, datedJanuary 13, 1885.

Application filed January 6, 1883. (N0 model.) Iatented in Canada May 3,1881, No. 12,729. i

To aZZ whom it may concern.-

Be it known that I, WILLIAM STEPHENSON, of Jordan, in the county ofLincoln, in the Province of Ontario, Dominion of Canada, have invented anew and useful Combined Boiler and Straw-Burning Furnace; and I dohereby declare that the following is a full, clear, and exactdescription of the construction and operation of the same.

The first part of my invention relates to the improved construction of aboiler and its furnace in such a manner that straw, grass, or kindredsubstances can be utilized and used as fuel in place of wood and coalwhen the latter cannot be had conveniently and cheaply.

The second part of my invention relates to the construction of a jacketsurrounding the boiler in such a manner that there will be a space ofabout three-quarters of an inch between them,and the exh aust-steam beenabled to be extended around the outer surface of the boiler forkeeping up the heat with less fuel than can be accomplished withordinary steamboilers.

The third part of my invention relates to the construction of a boilerin such a manner that sparks, &c.,from the fire under the boiler will bearrested and extinguished before reaching the smoke-stack.

The fourth part of my invention relates to the construction of a boilerwith two or a ate a blast to cause the fire to burn more intensely thanordinary, and the other draws and forces the smoke through water toextinguish sparks arising from the combustion of the fuel. The fans arealso so constructed as to be noiseless, as will be more fully shownhereinafter.

By reference to the drawings it will be seen that Figure 1 is a sideelevation of an apparatus embodying my invention. Fig. 2 isa verticalsection of the same; Fig. 3, a plan view of the same; Fig. 4, across-section of the horizontal part of the boiler, showing the divisionon each side between the boiler and jacket, Fig. 5, a top view of thesharppointed tongue in the fans. Fig. 6 is a vertical transverse sectionthrough center of fans G and G on line 00 w.

I construct the boiler and straw-burning apparatus somewhat similar tothe portable farmter,under the bottom of the fire-box, where the 6 5sparks are extinguished.

A is the boiler; B,the firebox; C,the steamspace D, the hotwater spaceoutside of firebox. I construct a jacket, K, to surround the boiler,except the front portion of it where the return-pipe is located, made ofsheet-iron or kindred substance, and there will be a space, M, betweenthe jacket and boiler, of about three-quarters of an inch. This space,when the machine is in operatiomwill be filled with exhaust-steam,except the lower part of boiler, which forms the ash-pan, and is filledwith water before escaping at the pipe J with the smoke. By this meansthe boiler will not cool so rapidly, and steam will be kept up with muchless fuel than would otherwise be required.

0 is a pan of water under the grate-bars, having its inlet at O, and isfor extinguishing the sparks from the fuel.

E E are openings for smoke at the end of the horizontal part of theboiler leading into the flue F under said portion of the boiler, andconnecting with the fan G. Said fan is for the purpose of drawing thesmoke to itself and forcing it through the water in O to the exitflue J,where the exhaust unites with the smoke and passes off together.

H is a flue or pipe leading from the return flue F to the fan G.

H is a tube leading from the fan G to the annular space I, communicatingfrom the exitflue J.

G is a second fan, placed alongside of the other one, G, and is for thepurpose of supplying fresh air to the fire through the tube I,which isbent at right angles under the gratebars N and provided with a number ofholes, a, to admit a blast of air between every other grate-bar. By thismeans theashes and em- 'bers drop through the spaces between the barswhere there is no blast, and fall into the water 0 underneath.

Nis the grate, with about six or eight bars, and which may be cast inone piece.

9 and h are slanting partitions,placed in the exh aust-steam spacebetween j acket andboiler, to divide the steam-space from smoke-space;and m, a horizontal partition connectingthe two said partitions g andh,to divide the fines H and H at that point. a n are partitions on eachside of the horizontal part of the boiler, respectively, between thejacket and the outer surface of the boiler, to divide the smokespacefrom the exhaust-steam space.

G, Fig. 5, is a sharp-pointed tongue, se-

cured at the lower part of the fans for the purpose of causing said fansto work without noise.

6 are strips for the purpose of affixing a seed-drill, D, to the frontof the apparatus.

My apparatus is also adapted to be connected to other agriculturalimplements-such as land-rollers, plows, and harrows-by suitableconnections, so that the seed-drilling, landrolling, plowing, andharrowing can all be done at the same time.

The expense of running my machine is very small, on account of thetrifling cost of fuel, and the construction of boiler and jacket, whicheconomize the fuel without waste.

The peculiar make of the boiler, with the fan-blast,enables fuel of aninferior quality to be used with success and economy in running themachine, as well as the ability to raise steam quickly,and giving theoperator power to control the fire fast or slow, as he may require it.

The construction of the jacket outside of the boiler and steam-space,between the jacket and boiler, for exhaust-steam prevent cold air fromcoming in direct contact with the boiler;

consequently less fuel is required to keep up steam.

What I claim as my invention is- 1. The combination of the fire-box,hot-water and steam chamber surroundingthe same, a water-tank below saidfirebox and chamber, and the fans G and G, all substantially as and forthe purposes set forth.

2. The combination of the fire'box, ahotwater and steam chambersurrounding the same, an exhauststeam space surrounding said chamber andinclosed by a steam-tight jacket, and the partitions g h m n n, allsubstantially as and for the purposes set forth.

3. The combination of the fire-box having horizontal smoke-passagesconnected with the same, the returnflue F, smoke-fan G, steamchambers Dand M, water-tank O, and exitpipe J, all substantially as and for thepurposes set forth.

lVM. STEPHENSON. In presence of GEo. B. ELLIOTT, PETER BEGG.

